Nissan Qashqai J11. Manual — part 1092
HAC-4
PTC HEATER CONTROL SYSTEM . . . . . .
PTC HEATER CONTROL SYSTEM : System De-
scription . . . . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . .
Switch Name and Function . . . . . . . . .
DIAGNOSIS SYSTEM (A/C AMP.) . . . . ..
Description . . . . . . . . . . . . . . . .
CONSULT Function . . . . . . . . . . . ...
DIAGNOSIS SYSTEM (BCM) . . . . . . ..
COMMON ITEM . . . . . . . . . . . . . ...
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) . . . . . . . . . . . . ...
AIR CONDITIONER . . . . . . . . . . . . .
AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . . .
A/C AMP. . . . . . . . . . . . . . . .
Reference Value . . . . . . . . . . . . .
DTC Index . . . . . . . . . . . . . . . .
BCM, ECM, IPDM E/R . . . . . . . . . .
List of ECU Reference . . . . . . . . . . ...
WIRING DIAGRAM . . . . . . . . .
MANUAL AIR CONDITIONER SYSTEM . . .
Wiring Diagram . . . . . . . . . . . . . ..
BASIC INSPECTION . . . . . . . . ..
DIAGNOSIS AND REPAIR WORK FLOW . ..
Work Flow . . . . . . . . . . . . . . . ..
OPERATION INSPECTION . . . . . . . .
Work Procedure . . . . . . . . . . . . . .
SYSTEM SETTING . . . . . . . . . . ..
Setting of Target Evaporator Temperature Upper
Limit Value . . . . . . . . . . . . . . . .
DOOR MOTOR STARTING POSITION RE-
SET . . . . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . .
Work Procedure . . . . . . . . . . . . . .
DTC/CIRCUIT DIAGNOSIS . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
U1010 CONTROL UNIT (CAN) . . . . . ...
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B24A4 INTAKE SENSOR . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
B24B7 INTAKE DOOR MOTOR . . . . . ..
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
B24B9 MODE DOOR MOTOR . . . . . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
B24BB LEFT AIR MIX DOOR MOTOR . . .
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
POWER SUPPLY AND GROUND CIRCUIT .
A/C AMP. . . . . . . . . . . . . . . . . .
A/C AMP. : Diagnosis Procedure . . . . . . ..
BLOWER MOTOR . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (Blower Motor) . . . . .
Component Inspection (Blower Relay) . . . . .
Component Inspection (Fan Control Amp.) . . ..
MAGNET CLUTCH . . . . . . . . . . ...
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
ECV (ELECTRICAL CONTROL VALVE) . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ..
PTC HEATER . . . . . . . . . . . . ...
Component Function Check . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (PTC Relay) . . . . . .
Component Inspection (PTC Heater) . . . . .
SYMPTOM DIAGNOSIS . . . . . . ...
MANUAL AIR CONDITIONING SYSTEM . .
Symptom Table . . . . . . . . . . . . . .
INSUFFICIENT COOLING . . . . . . . .
Description . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
INSUFFICIENT HEATING . . . . . . . .
Description . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
COMPRESSOR DOES NOT OPERATE . . ..
Description . . . . . . . . . . . . . . .
HAC-5
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REMOVAL AND INSTALLATION . . . .
A/C CONTROL (A/C AUTO AMP.) . . . . ..
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
AMBIENT SENSOR . . . . . . . . . . .
Removal and Installation . . . . . . . . . ...
INTAKE SENSOR . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
REFRIGERANT PRESSURE SENSOR . . ...
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
PTC HEATER . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
FAN CONTROL AMPLIFIER . . . . . . ...
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
DOOR MOTOR . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
AIR MIX DOOR MOTOR . . . . . . . . . . .
AIR MIX DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . .
INTAKE DOOR MOTOR . . . . . . . . . . ..
INTAKE DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . .
MODE DOOR MOTOR . . . . . . . . . . .
MODE DOOR MOTOR : Removal and Installation
MANUAL HEATER
PRECAUTION . . . . . . . . . . .
PRECAUTIONS . . . . . . . . . . . .
Precautions for Removing Battery Terminal . . .
SYSTEM DESCRIPTION . . . . . . ...
COMPONENT PARTS . . . . . . . . . .
MANUAL HEATER SYSTEM . . . . . . . . ..
MANUAL HEATER SYSTEM : Component Parts
Location . . . . . . . . . . . . . . . . .
PTC HEATER CONTROL SYSTEM . . . . . .
PTC HEATER CONTROL SYSTEM : Component
Parts Location . . . . . . . . . . . . . ...
A/C UNIT ASSEMBLY . . . . . . . . . . . .
A/C UNIT ASSEMBLY : Air Mix Door Motor . . .
A/C UNIT ASSEMBLY : Mode Door Motor . . ...
A/C UNIT ASSEMBLY : Intake Door Motor . . ...
A/C UNIT ASSEMBLY : Blower Motor . . . . ...
A/C UNIT ASSEMBLY : Fan Control Amp. . . .
A/C UNIT ASSEMBLY : PTC Heater . . . . . .
Heater Control (A/C Amp.) . . . . . . . . .
Ambient Sensor . . . . . . . . . . . . . .
SYSTEM . . . . . . . . . . . . . . ..
MANUAL HEATER SYSTEM . . . . . . . . ..
MANUAL HEATER SYSTEM : System Descrip-
tion . . . . . . . . . . . . . . . . . . .
MANUAL HEATER SYSTEM : Air Inlet Control .
MANUAL HEATER SYSTEM : Door Control . . .
MANUAL HEATER SYSTEM : Door Motor Start-
ing Position Reset Control . . . . . . . . . .
PTC HEATER CONTROL SYSTEM . . . . . .
PTC HEATER CONTROL SYSTEM : System De-
scription . . . . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . ...
Switch Name and Function . . . . . . . . .
DIAGNOSIS SYSTEM (A/C AMP.) . . . . .
Description . . . . . . . . . . . . . . . .
CONSULT Function . . . . . . . . . . . ...
DIAGNOSIS SYSTEM (BCM) . . . . . . .
COMMON ITEM . . . . . . . . . . . . . ...
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) . . . . . . . . . . . . ...
AIR CONDITIONER . . . . . . . . . . . . .
AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) . . . . . . . . . . . .
ECU DIAGNOSIS INFORMATION . . .
A/C AMP. . . . . . . . . . . . . . . .
Reference Value . . . . . . . . . . . . .
DTC Index . . . . . . . . . . . . . . . .
BCM, ECM, IPDM E/R . . . . . . . . . .
List of ECU Reference . . . . . . . . . . ...
WIRING DIAGRAM . . . . . . . . .
MANUAL HEATER SYSTEM . . . . . . ..
Wiring Diagram . . . . . . . . . . . . . ..
BASIC INSPECTION . . . . . . . . .
DIAGNOSIS AND REPAIR WORK FLOW . .
Work Flow . . . . . . . . . . . . . . . ..
OPERATION INSPECTION . . . . . . .
Work Procedure . . . . . . . . . . . . . .
DOOR MOTOR STARTING POSITION RE-
SET . . . . . . . . . . . . . . . . ..
Description . . . . . . . . . . . . . . . .
HAC-6
DTC/CIRCUIT DIAGNOSIS . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . ..
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
U1010 CONTROL UNIT (CAN) . . . . . ...
Description . . . . . . . . . . . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
B24B7 INTAKE DOOR MOTOR . . . . . ..
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
B24B9 MODE DOOR MOTOR . . . . . .
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
B24BB LEFT AIR MIX DOOR MOTOR . . ...
DTC Logic . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection . . . . . . . . . . ...
POWER SUPPLY AND GROUND CIRCUIT ...
A/C AMP. . . . . . . . . . . . . . . . . ..
A/C AMP. : Diagnosis Procedure . . . . . . ..
BLOWER MOTOR . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (Blower Motor) . . . . ..
Component Inspection (Blower Relay) . . . . ..
Component Inspection (Fan Control Amp.) . . ...
PTC HEATER . . . . . . . . . . . . ..
Component Function Check . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Component Inspection (PTC Relay) . . . . . .
Component Inspection (PTC Heater) . . . . .
SYMPTOM DIAGNOSIS . . . . . . ...
MANUAL HEATER SYSTEM . . . . . . ...
Symptom Table . . . . . . . . . . . . . .
INSUFFICIENT HEATING . . . . . . . .
Description . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . .
HEATER CONTROL (A/C AMP.) . . . . . .
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
AMBIENT SENSOR . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
PTC HEATER . . . . . . . . . . . . ...
Removal and Installation . . . . . . . . . ...
FAN CONTROL AMPLIFIER . . . . . . .
Exploded View . . . . . . . . . . . . . ..
Removal and Installation . . . . . . . . . ...
DOOR MOTOR . . . . . . . . . . . . .
Exploded View . . . . . . . . . . . . . ..
AIR MIX DOOR MOTOR . . . . . . . . . . .
AIR MIX DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . .
INTAKE DOOR MOTOR . . . . . . . . . . .
INTAKE DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . .
MODE DOOR MOTOR . . . . . . . . . . .
PRECAUTIONS
HAC-7
< PRECAUTION >
[AUTOMATIC AIR CONDITIONING]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000010432151
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precautions for Removing Battery Terminal
INFOID:0000000010521162
• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key
or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.
• When disconnecting the 12V battery terminal, turn off the ACC
power before disconnecting the 12V battery terminal, observing
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to instruction described below.
1.
Open the hood.
2.
Turn ignition switch to the ON position.
3.
Turn ignition switch to the OFF position with the driver side door opened.
4.
Get out of the vehicle and close the driver side door.
SEF289H
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